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Grand Power built its reputation on precision Slovakian manufacturing, and the Stribog SP9A3S is the result of that engineering applied to a compact PDW-style pistol. The "S" designation stands for short, and that tells you pretty much everything you need to know about its personality. Where the standard SP9A3 runs an 8" barrel, this one trims it down to 5.5", making it noticeably more maneuverable while keeping the same roller-delayed blowback action that made the A3 series stand out in the first place.
Most pistol caliber platforms in this price range rely on simple blowback operation, which works fine but tends to feel punchy and throws more recoil rearward. The SP9A3S uses a semi-locked bolt with roller-delayed action, the same general operating principle that made the MP5 famous for its smooth, flat-shooting behavior. The mechanical delay buffers the cycling impulse so the gun stays more controllable during fast strings of fire. Pair that with a non-reciprocating charging handle that stays parked up front while you shoot, and you've got a platform that's noticeably more refined than the blowback competition. The flat-face trigger breaks cleanly with quick, audible reset.
The SP9A3S doesn't make you choose between compactness and versatility. The extruded aircraft-grade aluminum upper carries a full-length Picatinny top rail for optics, plus a section of Picatinny rail under the handguard at the 6 o'clock position for lights or lasers. M-LOK slots at the 3 and 9 o'clock positions on the handguard give you even more real estate for grips and accessories. The 5.5" threaded barrel uses a standard 1/2×28 thread pitch, so basically any popular muzzle device or suppressor designed for 9mm will thread right on. The backplate is also replaceable, which opens the door to different brace configurations down the road.
Controls are fully ambidextrous across the board, including the safety lever, magazine release, and a charging handle that can be swapped to either side. The SB Tactical side-folding brace folds to the right when you need the package to shrink down, and at only about 13 inches with the brace folded, this thing tucks into a bag or behind a vehicle seat without any drama. Three curved 30-round proprietary magazines come in the box along with a fitted hard carrying case, so you're set up to shoot the moment you leave the FFL counter.
No, the SP9A3S uses Grand Power's own proprietary curved 30-round magazines, which are included in the box. If Glock magazine compatibility is important to you, Grand Power makes a separate model for that, the SP9A3G. The proprietary mags are widely available and reasonably priced, so keeping extras on hand isn't a problem.
The roller-delayed action in the A3S was engineered around 124-grain NATO-spec loads, which run at slightly higher pressure than standard 115-grain American range ammo. That said, the US-spec bolt in current production guns has been tuned to handle 115-grain loads reliably as well. For the smoothest and most consistent cycling, 124-grain ammo is a solid choice.
Yes. The 5.5" barrel is threaded 1/2×28, which is the standard thread pitch for 9mm suppressors and muzzle devices. A thread protector is included to cap it off when you're running it bare. The roller-delayed operating system also has the added benefit of running quieter when suppressed compared to simple blowback designs.
The main difference is the barrel length. The A3S trims the barrel down to 5.5" versus the standard A3's 8", making it shorter and easier to maneuver in tight spaces. Both share the same roller-delayed action, non-reciprocating charging handle, and ambidextrous controls. You give up a small amount of muzzle velocity with the shorter barrel, but you gain a significantly more compact package that still outperforms most handguns in terms of control.
Absolutely. The full-length Picatinny rail along the top of the receiver gives you plenty of room to mount a red dot or compact magnified optic. Most people running these go with a compact reflex or holographic sight to keep the overall size manageable. The flip-up iron sights fold down to clear the rail, so there's no conflict when mounting an optic.
With the SB Tactical brace folded to the side, the SP9A3S measures approximately 13 inches, making it one of the more compact 9mm pistol platforms available. Extended with the brace deployed, it runs around 22 inches. That folded dimension is what makes it practical as a vehicle gun or backpack option.
| UPC | 810091152836 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 810091152836 |
| Action | |
| Barrel Length | 5.5" |
| Caliber/Gauge | 9mm |
| Capacity | 30 + 1 |
| Color | Black |
| Model | |
| Product Type | Striker Fired |
| Safety | Ambidextrous Safety Lever |
| Sights | Iron |
| Units per Box | 1 |
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